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Difficulty: MediumDrainage System and Water Resources of India

The Brahmaputra River receives numerous snow-fed and rain-fed tributaries along its course through Assam. Which of the following is a major right-bank tributary of the Brahmaputra River that originates in the Tibetan Himalayas and is recognized as its largest tributary?

  1. SubansiriAnswer
  2. B
    Dhansiri
  3. C
    Dibang
  4. D
    Kopili

Answer

Subansiri is the major right-bank tributary of the Brahmaputra River that originates in the Tibetan Himalayas.
Subansiri is a trans-Himalayan river that originates in Tibet and flows into Assam, forming the largest right-bank tributary of the Brahmaputra River.

Step-by-Step Solution

1
Differentiate between the left-bank and right-bank tributaries of the Brahmaputra River.
Right-bank tributaries flow from the northern Himalayan region (Subansiri, Kameng, Manas, Sankosh, Teesta). Left-bank tributaries join from the south and east (Dibang, Lohit, Burhi Dihing, Dhansiri, Kopili).
Classifying tributaries by bank orientation eliminates options originating from the southern and eastern hills.
2
Identify the river originating in Tibet that is the largest tributary of the Brahmaputra.
Subansiri is a trans-Himalayan river originating in Tibet and is known as the largest tributary of the Brahmaputra River system.
Verifying origin and relative volume confirms Subansiri as the correct response.

Key Concept

Tributary orientation and geographic origins of the Brahmaputra River System
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Topics

Drainage System and Water Resources of India

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